Occultation event with (54656) 00SX362, event index number 3273
Regions able to see the event: US
Geocentric closest approach at 2026/02/19 23:38:52 UTC
J2000 position of star is 04:07:20.8 -06:24:56
Equinox of date position of star is 04:08:37.7 -06:20:50
Star is 61 degrees from the moon. Moon is 7% illuminated.
Stellar brightness G=15.0, apparent brightess of occulting body is G=16.5
Use an exposure time of 0.40 seconds with the standard RECON-QHY system.
SNR of 6.0 per integration for unocculted signal
Expected flux drop is 81% with SNR of 4.8 for the occulted depth (per occulted point)
Apparent velocity is 21.2 km/sec on the sky relative to the star, or, 19.3 arcsec/hr.
Position angle of asteroid motion is 25.7 degrees
The recommended exposure time corresponds to 8.5 km per image.
The 1-sigma error in the time of the event is 1.6 seconds.
The 1-sigma cross-track error in the shadow position is 1.2 km.
The sky-plane scale is 3959.5 km/arcsec.
Diameter estimates:
44.9 km assuming a 5% albedo, maximum of 2.1 sec for a central chord
18.3 km assuming a 30% albedo, maximum of 0.9 sec for a central chord
Cross-track diameter of 37.7 km used for deployment plan.
Star training set for 54656_00SX362, (2026/02/19 23:39UT) Object RA Dec mag sep mel Rigel 05:15:47.7 -08:10:24 0.1 16.76 78 67Bet Eri 05:09:08.2 -05:03:17 2.8 15.11 76 38Omi1Eri 04:13:08.6 -06:46:16 4.0 1.20 62 PPM 186561 04:08:46.4 -05:56:20 7.6 0.41 61 PPM 186558 04:08:44.9 -06:23:52 9.1 0.06 61 54656_00SX362 04:08:37.7 -06:20:50 16.5 61 Positions are for equinox of date
Star training set for 54656_00SX362, (2026/02/19 23:39UT) Object RA Dec mag sep mel Rigel 05:14:32.3 -08:12:06 0.1 16.76 78 67Bet Eri 05:07:50.8 -05:05:13 2.8 15.11 76 38Omi1Eri 04:11:52.0 -06:50:13 4.0 1.20 62 PPM 186561 04:07:29.3 -06:00:26 7.6 0.41 61 PPM 186558 04:07:28.0 -06:27:58 9.1 0.06 61 54656_00SX362 04:07:20.8 -06:24:56 16.5 61 Positions are for J2000